Sliding door installation

ABSTRACT

A sliding door installation includes a roller running track and at least one roller carriage supported to be displaceable in the roller running track, at which carriage a sliding door is attached. A closing device is provided with an elastic traction means, wherein a first end of the elastic traction means is stationarily attached with regard to the roller running track, and a second end of the elastic traction means is attached to the at least one roller carriage for changing the tensile stress in the elastic traction means during a movement of the roller carriage in the roller running track.

TECHNICAL FIELD

The present disclosure relates to a sliding door installation as well asto a method for mounting such a sliding door installation.

BACKGROUND

Generally, it is known to employ sliding door installations toreversibly close door openings. Conventional sliding door installationsare equipped with a sliding door for this purpose, which is supported tobe displaceable between an opened position and a closed position bymeans of a roller carriage. In this case, for said displaceablemovement, the roller carriage is supported in a corresponding rollerrunning track. In the known sliding door installations, usually theopening and the closing are purely manually accomplished, namely bymeans of actively manually sliding the sliding door open or closed.Also, motor drives are known, which produce the opening procedure andthe closing procedure with a corresponding provided motor driving force.

The known solutions are disadvantageous in that with regard to a purelymanual solution, there is the risk of the sliding door not beingcompletely closed or not being closed at all, after a user has passedthrough the door opening. This circumstance my result in reducedinsulating properties of the sliding door, namely the insulation fromsound and the insulation against loss of heat. In other words, inparticular in passage areas, where the door opening is frequentlypassed, reliable closing of the sliding door after it has been passed isof great advantage. Employing motor drives as a solution to this problementails in addition high cost. Also, the drive has a heavy weight andmoreover, the space requirement for such a motor drive needs to beconsidered in the associated system.

Therefore, the present disclosure aims to overcome the above-describeddisadvantages at least partially. The present disclosure aims to improvethe comfort and the described protecting effect of a sliding doorinstallation in a cost-effective and simple manner.

Further features and details of the disclosure will result from thedescription and the drawings. In this case, features and details,described in conjunction with the inventive sliding door installation,are obviously also valid in conjunction with the inventive method andrespectively vice versa, such that mutual reference is made,respectively can be made with respect to the disclosure of individualaspects of the disclosure.

SUMMARY

According to the disclosure, a sliding door installation is provided,which includes a roller running track and at least one roller carriagesupported to be displaceable in the roller running track, wherein asliding door is attached to the roller carriage. An inventive slidingdoor installation is distinguished in that a closing device with anelastic traction means is provided. In this case, a first end of theelastic traction means is stationarily attached with regard to theroller running track. A second end of the elastic traction means isattached to the at least one roller carriage for changing the tensilestress in the elastic traction means during a movement of the rollercarriage in the roller running track.

According to the disclosure, also a sliding door having two or more doorleaves can be provided such that accordingly also two or more rollercarriages are provided. Furthermore, each one of the door leaves of asliding door may be attached to two roller carriages as well. Usually,such multi-leaf sliding doors are built with a telescopic function suchthat telescoping relatively narrow door leaves can cover a relativelylarge door opening.

A closing device according to the idea of the present disclosure servesin particular exclusively for the closing movement of the sliding door.Accordingly, the opening movement of the sliding door is still performedmanually. Therefore, the closing device serves for assisting,respectively in particular for completely automatically performing theclosing procedure. This means that the closing device provides thenecessary closing force, wherein preferably the closing force is also ineffect during the entire opening procedure.

For providing the above function, an inventive closing device isequipped with an elastic traction means. A structural component, whichis able to experience an elastic transformation, is understood as anelastic traction means. An elastic transformation is produced in that aforce is applied for performing said elastic transformation.Accordingly, by stretching the elastic traction means said necessaryforce is stored in the form of tensile stress in the elastic tractionmeans. In this case, the movement of the roller carriage and thecorresponding correlation of the two ends of the elastic traction meansalso provide a correlation between the tensile stress in the elastictraction means and the position of the roller carriage.

If the roller carriage moves together with the sliding door from theclosed position into the opened position, this continues to be performedby manual actuation by the user. In other words, the user slides thesliding door into its opened position and thereby moves the rollercarriage correspondingly on the roller running track. By connecting thesecond end to the roller carriage and the first end in a stationarymanner with regard to the roller running track, this circumstanceresults in that the length of the elastic traction means changes. Inparticular, the length of the elastic traction means considerablylengthens by elastic deformation by being pulled lengthwise. Saidelastic deformation results in increasing the tensile stress within theelastic traction means during the movement of the roller carriage intothe opened position. Now, if the user or another mechanical device, inthe shape of a latching device, as will be explained later, releases thesliding door and/or the roller carriage when they are in the openedposition, the stored tensile stress can be released from the elastictraction means to the roller carriage, respectively to the sliding door.While the occurred elastic deformation of the elastic traction meansreduces, now the tensile stress is released and in this way with thegenerated force, a movement of the roller carriage and thereby of thesliding door is performed. Said movement is opposite to the openingmovement and accordingly performs the closing movement of the slidingdoor. In other words, now an automatic movement of the roller carriageand of the sliding door is realized into the closed position, whileemploying the tensile stress stored as force in the elastic tractionmeans.

As can be understood from the above paragraph, it may be additionally ofimportance, if particular attention is paid to the spring characteristicof the elastic traction means. Thus, the tensile stress within theelastic traction means will depend on the spring characteristic and onthe actual deformation, namely the geometric amount of the deformation.In other words, if the tensile stress increases when opening the slidingdoor, the tensile stress reduces when the sliding door automaticallycloses.

According to the disclosure, now a particularly simple, compact system,reduced with regard to the complexity thereof will be provided forrealizing a sliding door installation. However, without unnecessary highexpenses with regard to a motor drive, the closing device is able toprovide automatic closing, in particular complete automatic closing.Preferably, the elastic traction means is employed in a pre-tensionedmanner for this purpose such that also in the closed position of theroller carriage, respectively of the sliding door, a correspondingpre-tension ensures that the sliding door is loaded with force,respectively is retained in said closed position. Therefore, not onlythe basic degree of automation of the closing movement is provided, butmoreover, it is also ensured that the sliding door actually closescompletely. This is of considerable importance in particular with regardto sound insulation and/or thermal insulation of two areas separated bymeans of the sliding door.

It may be advantageous, if in an inventive sliding door installation,the closing device includes at least one redirection means, about whichthe elastic traction means is guided between the two ends for alengthening of the geometrical extension of the elastic traction means.In this case, a redirection means may be configured to be rotatable, inparticular supported by means of ball bearings. However, sliding of theelastic traction means over a surface of the redirection means isconceivable. Thus, a redirection means serves for lengthening thegeometrical extension of the elastic traction means. In other words, ahousing may be affixed above the door opening, wherein said housingincludes for example the roller running track. By redirecting theelastic traction means by means of the redirection means, it is nowpossible to delimit the housing to the extension of the roller runningtrack and still allow for a considerable lengthening of the elastictraction means. In this case, the geometrical extension of the elastictraction means may act in that an improved spring characteristic bebuilt. Thus, it is advantageous, if with redirection means in particulara multiple length of the elastic traction means is provided in relationto the width of the roller running track. The longer the geometricalextension of the elastic traction means can be made, the flatter thespring characteristic can be provided within the maneuver clearance ofthe roller carriage. The flatter said spring characteristics aredesigned the lower the acceleration of the roller carriage during theautomatic closing movement. This results in a considerably improved andin particular quieter closing movement of the roller carriage, becauseit is slower. Moreover, the durable stability of the elastic tractionmeans can be reinforced in this way, because the actual applied tensilestress can be designed with lower maximum values. Last but not least,the difference between the opened position and the closed position ofthe sliding door can be considerably improved, respectively minimizedfor the tensile stress in the elastic traction means by lengthening thegeometrical extension by means of the redirection means. A subsequentadaptation to a pretension, respectively the difference with regard tothe spring characteristics is for example conceivable by means of acorresponding variable support of the redirection means. Thus, forexample redirection rollers could be provided at the two lateral ends ofa roller running track, about which the elastic traction means isguided. In this case, the bearing axes of the redirection means can beattached in oblong holes for correspondingly increasing or reducing apretension of the elastic traction means by means of lateraldisplacement.

Another advantage may be, if, in an inventive sliding door installation,the closing device and/or the elastic traction means fulfill/s at leastone of the following parameter ranges:

-   -   maximum tensile stress with the sliding door being opened        between 20 N and 35 N,    -   maximum tensile stress with the sliding door being closed        between 10 N and 25 N,    -   difference between tensile stress with the sliding door being        opened and tensile stress with the sliding door being closed        between 5 N and 25 N,    -   length of the elastic traction means in the neutral fiber        between 4 m and 5 m in the mounting condition,    -   exterior diameter of the elastic traction means in the range        between 5 mm to 8 mm.

The above parameter ranges may correlate in particular withcorrespondingly flat designed spring characteristics, as explained inthe above paragraph. Obviously, the described listing is understood asnon-exhaustive. An exterior diameter is in particular preferred in therange of about approximately 6 mm. In this case, the length of theelastic traction means in the neutral fiber is related to the mountingcondition and is thereby already pretensioned. This is in particular themounting situation in a roller carriage, which is located in the closedposition associated to the sliding door.

It is likewise advantageous, if, in an inventive sliding doorinstallation, the first end of the traction means is attached with afirst knot stationarily with regard to the roller running track and/orthe second end of the traction means is attached with a second knot tothe at least one roller carriage. A particularly simple andcost-effective mounting is thereby made possible. Also, adjusting thepretension can be performed particularly simple, cost-effectively andfast. Last but not least, it is possible in this way to provide for alater variation of the pretension, without having to perform expensivemaintenance work. Thus, loosening the knot and retightening the knot ata different location, changes the tension very quickly and simply. Acorresponding overhang of the end of the elastic traction means may befixed to the respective attachment point, for example by means of cableties. Moreover, such an embodiment allows for providing a free, inparticular infinitely variable pretension. In this case, the elastictraction means may include a surface, respectively a materialconfiguration, which favors, respectively simplifies manual looseningthe knot. In this case, it may be question for example of a monofilewoven wrapping. As an alternative to the knot, clamping elements can beemployed, which are pressed at the corresponding end of the elastictraction means. Also, oblong holes can be provided, which allow for aheight varied connection of the respective end of the elastic tractionmeans to the roller carriage, respectively to the correspondingattachment point of the roller running track.

Obviously, it is basically also conceivable, that, in an inventivesliding door installation, the first end of the traction means isattached with a first knot to the at least one roller carriage and/orthe second end of the traction means is attached with a second knotstationarily with regard to a roller running track.

Moreover, it is advantageous, if, in an inventive sliding doorinstallation, a dampening device is provided for dampening the movementof the roller carriage, in particular exclusively into a first terminalposition, which corresponds to the closed position of the sliding door.Said dampening device thus dampens the automatic closing movement.Simultaneously, the dampening device is configured to leave the openingmovement un-charged with regard to a dampening force. This means, theindividual user can perform the manual opening movement in a knownmanner. Just the closing movement and in particular only the terminalportion of the closing movement, which is automated by means of thereleased tensile stress from the elastic traction means, will bedampened by the dampening device. Such a dampening device may beconfigured as a spring dampening system. Obviously, also a puredampening configuration of the dampening device is conceivable such thatthe associated spring function is fulfilled by the spring-elasticconfiguration of the elastic traction means. However, basically it isalso conceivable to charge the dampening device with regard to theopening movement thereof with a dampening force without compromising thefunctionality of the inventive dampening device.

It may be likewise advantageous, if, in an inventive sliding doorinstallation, a latching device is provided with a mobile latchingelement, which is disposed at the roller carriage, and a stationaryfixing element in relation the roller running track for the reversiblelatching cooperation with the latching element in the roller carriage ina second terminal position, which corresponds to the opened position ofthe sliding door. Thus, such a latching device serves for keeping thesliding door in the opened condition. Such a latching element may havefor example a hook-shaped or ball-shaped embodiment. The fixing elementhas corresponding complementary geometrics such that in particular atleast sectionwise a positive connection can be established between thelatching element and the fixing element. In this case, the latchingposition can be occupied by means of the elastic deformation of thelatching element and/or of the fixing element. Now, said position iscancelled by means of correspondingly loosening the latching device, andthe tensile stress stored in the elastic traction means can be releasedfor the automatic closing procedure. In this case, the required latchingforce is preferably in the range of approximately 30 N. As analternative to mechanically, in particular positively operating latchingdevices, according to the idea of the disclosure, also embodiments withmagnets are conceivable. In this case, it may be question ofmagnetizable, electromagnetic or also permanent magnetic materials.

It is likewise moreover advantageous, if, in an inventive sliding doorinstallation, the latching device includes a trigger device forcancelling the latched cooperation between the latching element and thefixing element during a movement of the roller carriage beyond saidsecond terminal position. This results in a particularly simple andcost-effective solution for performing the automatic closing procedure.In the event the roller carriage, respectively the sliding door is inthe second terminal position, namely in the opened position of thesliding door, a movement beyond said second terminal position willtrigger the respective trigger function. Thereby, the release,respectively cancelling the latching cooperation is realized such thatwithout separate trigger means, the release of the tensile stress fromthe elastic traction means is realized. In this case, the movementbeyond the second terminal position is in particular less thanapproximately 5% of the preceding overall opening movement between thetwo terminal positions of the roller carriage.

Another advantage is found, if, in an inventive sliding doorinstallation, the elastic traction means includes at least one of thefollowing embodiments:

-   -   woven rubber cord    -   silicone round cord    -   silicone tube.

The above enumeration is a non-exhaustive listing. In particular, theelastic traction means is configured in a rope-shaped extension.Obviously, in axial direction also other embodiments can be combinedwith each other. Also the elastic traction means may include two ormore, in particular parallel extending strands of individual tractionmeans parts.

Another advantage can be achieved, if, in an inventive sliding doorinstallation, the elastic traction means has tensile stresscharacteristics with a difference of the tensile stress in the tractionmeans between a first terminal position of the roller carriage, whichcorresponds to the closed position of the sliding door, and a secondterminal position of the roller carriage, which corresponds to theopened position of the sliding door, wherein the difference is designedbetween 50% and 200% of the pretension of elastic traction means in thefirst position of the roller carriage. This means that the tensilestress between the two terminal positions just increases in the rangebetween 50% and 200% with regard to the pretension. In the event thepretension is given for example at 10 N in a defined way in the tractionmeans, this means that the increase between the two terminal positionswill be realized in the range between 5 N to 20 N. In relation to thepretension, this translates to providing just a small increase of thetensile stress and thereby translates into flat springcharacteristics—what the tensile stress characteristics are alsoreferred to—for the elastic traction means between the two terminalpositions. This translates into the advantages with regard to theautomatic closing movement, which have been described already severaltimes, in particular with regard to a slower and thereby more uniformmovement.

Another advantage is found, if, in an inventive sliding doorinstallation, the length of the elastic traction means between the firstend and the second end in a pretensioned condition is designed in therange between 200% and 500% of the distance of a first terminal positionof the roller carriage, which corresponds to the closed position of thesliding door, and a second terminal position of the roller carriage,which corresponds to the opened position of the sliding door. In theevent the roller carriage is for example displaceable by 1 m between thetwo terminal positions, preferably the length of the elastic tractionmeans is configured to be between 2 m and 5 m. Such an embodiment servesfor allowing to choose materials with a higher degree of freedom, andnevertheless for providing preferred flat spring characteristics,respectively tensile stress characteristics. Such a relatively longtraction means allows in particular for being able to built such flatspring characteristics, respectively flat tensile stress characteristicsin an inexpensive and simple manner.

Likewise a subject matter of the present disclosure is a method formounting an inventive sliding door installation including the followingsteps:

-   -   inserting the roller carriage, in particular with a sliding door        attached thereto, into the roller running track,    -   connecting the first end of the elastic traction means to a        point, which is stationary with regard to the roller running        track,    -   connecting the second end of the elastic traction means to the        roller carriage while introducing tensile stress as a pretension        into the elastic traction means.

By mounting an inventive sliding door installation, the same advantagesare achieved as those explained in detail with regard to an inventivesliding door installation. Here, in particular the simplicity and thereduction of complexity already during mounting can be clearly seen foran inventive sliding door installation, respectively for an inventivemethod.

In particular in a pre-mounted closing device 40, the step of connectingthe first end of the elastic traction means to a point, which isstationary with regard to the roller running track, by an installationtechnician during installation of the closing device may be omitted,because said method step has been already performed in the factoryduring pre-assembly.

BRIEF DESCRIPTION OF THE DRAWINGS

Further advantages, features and details of the disclosure will resultfrom the following description, in which, reference being made to thedrawings, several exemplary embodiments of the disclosure are describedin detail. In the drawings it is diagrammatically shown in:

FIG. 1 an embodiment of an inventive closing device,

FIG. 2 the embodiment of FIG. 1 in the mounted situation of the slidingdoor installation,

FIG. 3 a detail of the connection of the sliding door installation tothe roller carriage, and

FIG. 4 an embodiment of a latching device.

DETAILED DESCRIPTION OF THE DRAWINGS

FIG. 1 shows how an inventive closing device 40 may be configured in asliding door installation 10. Here, a part of the roller running track20 is illustrated, which may be configured either as a covering or as amounting interface for the attachment to a walling above a door opening.It can be well seen that the closing device 40 includes an elastictraction means 42 in the shape of a cord. In this case, it is a braidedsilicone rope, respectively a braided rubber rope, which is deflectedabout a corresponding redirection means 44. In this case, theredirection means 44 are configured as redirection rollers, whichinclude ball bearings as a rotary support.

Moreover, in FIG. 1 the two ends 42 a and 42 b of the traction means 42are seen. Here moreover, the connecting point 22 of the roller runningtrack 20 can bee seen, to which the first end 42 a of the elastictraction means 42 can be attached stationarily with regard to the rollerrunning track 20. The further attachment of the second end 42 b with theassociated knot 46 b will be explained later in detail with regard toFIG. 3.

The closing device 40 shown in FIG. 1 may also be in particularpre-mounted. This means that the structural components of the closingdevice 40 shown in the exploded illustration are located in theirrespective mounting position. This is advantageous in that the closingdevice 40 can be incorporated as a functional module into a sliding doorinstallation 10 in a simple manner, what is also revealed in FIG. 2,which shows the pre-mounted closing device 40 in the conditionincorporated into the sliding door installation 10. In the pre-mountedcondition of the closing device 40, the traction means 42 is underpretension such that the traction means 42 is disposed in the closingdevice 40 in a captive manner.

FIG. 2 shows diagrammatically how an end of a mounting method may beconfigured. Here, the roller running track 20 of the sliding doorinstallation 10 is already attached to a walling above a door opening. Asliding door 100, here a single door leaf, is attached to a rollercarriage 30. Here, the roller carriage 30 is in its second terminalposition E2, which corresponds to the opened position of the slidingdoor 100. At the other end of the roller running track 20, theassociated first terminal position E1 can be seen, which corresponds tothe position opposite the closed position of the sliding door 100. Also,in this case it is again revealed how, at this end of the openedposition, an additional functionality is given. In this case, on the onehand, it is question of a dampening device 50 and on the other hand of alatching device 60 to be explained later. The connection of the closingdevice 40 to the roller carriage 30 will be subsequently explained inmore detail with regard to FIG. 3.

FIG. 3 shows diagrammatically a section of FIG. 2. Here, the rollercarriage 30 can be very well seen with the connection of the tractionmeans 42 with its second end 42 b by means of a corresponding knot 46 b.Here, the roller carriage 30 is located in the second terminal positionE2 and in particular in a latched condition of the latching device 60.Here, the latching device 60 is for example configured as explained inmore detail in FIG. 4. Thus, a fixing element 64 is stationarilyattached to the roller running track 20. A mobile latching element 62travelling along of the roller carriage 30 may latch and unlatch. Thus,latching is realized in a reversible manner.

FIG. 4 shows diagrammatically one possible embodiment of such a latchingdevice 60. A mobile latching element 62 in the form of a ball-shapedhead is intended for mounting to the roller carriage 30. A fixingelement 64 can be attached stationarily with regard to the rollerrunning track 20. In the event now correspondingly the ball-shaped headof the mobile latching element 62 engages in the fixing element 64, thelatching is realized and thereby the securing against the automaticclosing movement. By releasing said reversible latching, the tensilestress of the traction means 42 can be released, whereby a correspondingapplication of force moves the roller carriage from the second terminalposition E2 into the first terminal position E1.

The above explanation is an exclusive description of examples.Obviously, individual features of the embodiments, as long as they aretechnically reasonable, can be freely combined with each other withoutleaving the scope of the present disclosure.

The invention claimed is:
 1. A sliding door installation, including aroller running track and at least one roller carriage supported to bedisplaceable in the roller running track, at which carriage a slidingdoor is attached, wherein a closing device is provided with an elastictraction means, wherein a first end of the elastic traction means isstationarily attached with regard to the roller running track, and asecond end of the elastic traction means is attached to the at least oneroller carriage for changing a tensile stress in the elastic tractionmeans during a movement of the roller carriage in the roller runningtrack, wherein the first end of the elastic traction means is attachedwith a first knot stationarily with regard to the roller running trackor the second end of the elastic traction means is attached with asecond knot to the at least one roller carriage, wherein the elastictraction means includes a monofile woven wrapping configured to loosenthe knot.
 2. The sliding door installation according to claim 1, whereinthe closing device includes at least one redirection means, around whichthe elastic traction means is guided between the first end and thesecond end for a lengthening of a geometrical extension of the elastictraction means.
 3. The sliding door installation according to claim 1,wherein the closing device or the elastic traction means meets at leastone of the following parameters: maximum tensile stress with the slidingdoor being opened between 20 N and 35 N, maximum tensile stress with thesliding door being closed between 10 N and 25 N, difference betweentensile stress with the sliding door being opened and tensile stresswith the sliding door being closed between 5 N and 25 N, length of theelastic traction means in a neutral fiber between 4 m and 5 m in amounting condition, and exterior diameter of the elastic traction meansbeing 5 mm to 8 mm.
 4. The sliding door installation according to claim1, wherein the first end of the elastic traction means is attached witha first knot to the at least one roller carriage or the second end ofthe elastic traction means is attached with a second knot stationarilywith regard to the roller running track.
 5. The sliding doorinstallation according to claim 1, wherein a dampening device isprovided for dampening the movement of the roller carriage exclusivelyinto a first terminal position, which corresponds to a closed positionof the sliding door.
 6. The sliding door installation according to claim1, wherein a latching device is provided with a mobile latching element,which is disposed at the roller carriage, and with a stationary fixingelement in relation to the roller running track for a reversiblelatching cooperation with the mobile latching element in the rollercarriage in a second terminal position, which corresponds to an openedposition of the sliding door.
 7. The sliding door installation accordingto claim 6, wherein the latching device includes a trigger function forcancelling the latching cooperation between the latching element and thefixing element during a movement of the roller carriage beyond thesecond terminal position.
 8. The sliding door installation according toclaim 1, wherein the elastic traction means includes at least one of thefollowing embodiments: a woven rubber cord, a silicone round cord, and asilicone tube.
 9. The sliding door installation according to claim 1,wherein the elastic traction means has tensile stress characteristicswith a difference of the tensile stress in the elastic traction meansbetween a first terminal position of the roller carriage, whichcorresponds to a closed position of the sliding door, and a secondterminal position of the roller carriage, which corresponds to an openedposition of the sliding door, wherein the difference is designed between50% and 200% of the pretension of elastic traction means in the firstterminal position of the roller carriage.
 10. The sliding doorinstallation according to claim 1, wherein a length of the elastictraction means between the first end and the second end in apretensioned condition is designed in the range between 200% and 500% ofthe distance of a first terminal position of the roller carriage, whichcorresponds to a closed position of the sliding door, and a secondterminal position of the roller carriage, which corresponds to an openedposition of the sliding door.
 11. A method for mounting a sliding doorinstallation having the features of claim 1, including the followingsteps: inserting the roller carriage with a sliding door attached to theroller carriage, into the roller running track, connecting the first endof the elastic traction means to a point, which is stationary withregard to the roller running track, connecting the second end of theelastic traction means to the roller carriage while introducing thetensile stress as a pretension into the elastic traction means.